Graham Nash talks about CSNY and the importance of speaking your mind.

Dozens of "dinosaur bands" go on tour every summer on the amphitheater circuit for a pleasant, and occasionally, inspired night of nostalgia. It seems almost incredulous to suggest that any of them might be suddenly relevant again, 35 years past their prime.

If any band from the era had the chops to pull that off, it would be Crosby, Stills, Nash & Young, the first American "supergroup" that performed its second gig in front of more than 500,000 people at Woodstock. Stephen Stills famously looked out at the masses after "Suite: Judy Blue Eyes" and confessed, "This is the second time we've ever played in front of people: We're scared shitless."